Confirming, on x86_64 install. The problem is quite critical, as I just couldn't run firefox anymore, it just kept crashing at startup. Unfortunately, the stack trace above is not very useful as debug symbols were not enabled.
It seems Adblock Plus 2.2 has a bug that makes Firefox 10.x to crash. It is supposed to be fixed in 2.2.1, and some users reported it did, but it didn't work for me. Installing a version prior to when the bug was introduced (2.1 in my test) leads to the same results, so maybe mageia's 10.0.11 has a problem here. I'm going to try with official Mozilla builds to see if the problem is there too.

Changing severity to critical as in my case, Firefox ended up crashing at each run, before any UI was shown, and with no other user action (as if the first thing it wanted to do was showing something adblock-related wich triggered the crash). Only moving my profile out of the way allowed me to run Firefox again.

Oh, and in my case, the bug first happened on my day-to-day profile, not on a new one like in comment 1. It also happens on a fresh one too, of course. Adblock Plus makes Firefox crash during the install too, not only when the user tries to show Adblock config panel.